id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
4155	HAVE_LIBM test doesn't work	donn		"The AC_SEARCH_LIBS test in configure.ac will always set HAVE_LIBM=1, whether the platform supports -lm or not.  It's really testing whether atan works, and it will indeed normally work -- the question is just whether it requires an explicit -lm.  The mechanics of this can be seen in the generated configure script: look for ""none required"".

The preceding test for HAVE_MINGWEX does work, and of course that formula works for HAVE_LIBM too."	bug	closed	high	7.0.1	Build System	6.12.3	fixed			Unknown/Multiple	Unknown/Multiple	Building GHC failed